The Liquid Transfer Pump is manually operated and is portable and light weight. Has a screw top to release siphon vacuum. You can pump 3 gallons of liquid per minute. Hand pump to initiate the siphon to start transferring liquid from one receptacle to another. You can easily empty containers with the Liquid Transfer Pump. It is useful in the garage, basement, bathroon, shop and yard. TeraPumpTM pumps any non-corrosive liquid, such as gas, water(not for drinking water), and oil. Products trademarked by TeraPumpTM. The TeraPumpTM name, images, and contents of this listing are protected by trademarks and copyrights. Copyright © 2010 TeraPumpTM.